Bruker SMART APEX diffractometer	3442 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.031
graphite	θmax = 27.5°, θmin = 1.7°
ω scans	h = −16→16
16900 measured reflections	k = −13→12
4164 independent reflections	l = −18→17